Sawing machine



L. H. THULLEN.

SAWING MACHINE. APPLICATION FILED SEPT. 27, 1918- 1 n m I 1 m 7w v. m wm 5. m f P v M Li. 6.

L. H. THULLEN.

SAWING MACHINE- APPLICATION FILED SEPT. 2?, 1918.

Patented Feb. 7, 1922.

3 SHEETS-SHEET 3.

avwe'wfoz UNITED STATES PATENT OFFICE.

SAWING MACHINE.

Specification of Letters Patent.

Patented Feb. '7, 1922..

Application filed September 27, 1918. Serial No. 255,965.

To all whom it may concern. v

Be it known that I, LOUIS H. THULLEN,

.a citizen of the United States, residing in the city of Grand Rapids,State of Micht gan, have invented certain new and useful Improvements inSawing Machines, of which the followingis a specification.

My invention relates to sawim machines such as referred to in my U. S.Tatent No. 1070638 dated Aug. 19, 1913; and the principal object of myinvention isto provide an improvedinachine of this character. Furtherobjects, features and advantages will more clearly appear from thedetailed description given below taken in connection with theaccompanying drawings which form a. part of this specification. In thedrawings:

Fig. 1 is a side elevation of a sawing machine embodying my invention inone form, the saw carriage and the parts carried thereby being shown infull lines in advanced position and in dotted lines in retractedposition. V

Fig. 2 is a front elevation thereof.

Fig. 3 is a detail sectional view showing the means whereby thetraveling carriage ofthe saw is supported and retained in operativerelation to the bed of the saw.

Fig. 1 is a detail sectional view taken on line l-t of Fig. 1, but on alarger scale.

Fig. 5 is a plan view of'the parts shown in Fig. 4.

Fig. 6 is a fragmentary detail view showing means for elevating orlowering the work table.

Fig. 7 is a detail view in elevation on an enlarged scale looking fromthe rear of Fig. 7

1 and showing the connection between the feeding motor and travelingcarriage of the machine. I

Fig. 8 is a sectional view on an enlarged scale of the valve forcontrolling the flow of the cooling fluid to the saw.

Referring to the various figures, the numeral 1 designates the bed ofthe machine and, 2 the traveling carriage which is supported ashereinafter described for movement back and forth along the bed 1. Thelatter is desirably provided with a rear eX- tension 3 by which the rearportion of the traveling carriage is supported when the carriage is in aretracted or partially retracted position. The front of the bed 1 isprovided with a work table or support 4- which isguided for up and downmove ment, as by bars or rails 5 which are secured to the bed of themachine and project within channels or grooves on opposite sides of thework table. 7 Suitable means for effecting the vertical movement oft-hework table are provided, the means, as shown, comprising a verticalshaft 6 threaded into an extension 7 at the rear of the work table, theshaft 6 being rotated by means of a crank 8 andbevel gears 9 and 10.

Referring to Fig. 3 the means for movably supporting the travelingcarriage upon the bed 1' and retaining the carriage in operativeposition upon the bed comprise, as shown, rollers 11 carried by thecarriage 2 and arranged to roll along upwardly facing rails 12 adjacentopposite sides of the bed 1 and bearings 14: arranged to slide upondownwardly facing rails 15 extending along the top of the bed 1 atopposite sides thereof and slightly inwardly of the rails 12. The rails12 and 15 are desirably formed integrally with the top of the bed 1, andthe bearings for the rollers 11 are desirably in the form of spacedparallel flanges 16 and 17 integral with the frame of the travelingcarriage and projecting downwardly therefrom. The bearing 14 whichengages the lower face of the downwardly facing rail 15 is desirablyformed integrally with the lower portion of the flange 17. The rollers11 are supported upon the shafts 18 which are adjustable so as to raiseor lower the rollers relatively to the carriage and to bring the bearing14 into operative relation to the rail 15 when the rollers are inengagement with the rails 12. As shown, the shafts 18 are formed withthe central portion upon which the rollers are mounted eccentric to theend portions 19 and 20, which are supported in bearings 16 and 17respectively; so that by a rotation of the shafts 18 the rollers may beadjusted upwardly and downwardly with respect to the traveling carriage.For securing each shaft in adjusted position I have shown a bolt 21threaded into the traveling carriage and adapted to be adjusted so as topress the washer 22 against the'headed end 24 of the shaft with thedesired degree of ressure.

The rollers 11, as shown, are hel by the periphery of the rollers 11 isdesirably grooved and the rails 12 are shaped to fit within the grooves.As shown, the grooves and the rails 12 are of-V shape in cross-section.Any suitable number of the rollers 11 may be provided on each side ofthe machine.

The forward end of the traveling carriage, as shown, is provided with anupward extending portion 26 to which is secured an electric motor 27 tothe shaft of which is secured the saw-disc 28. This may be a largerapidly rotating metallic disc without teeth which cuts through thematerial by friction; but it will. be understood that my invention isnot limited to use with this particular kind of saw or operation performing member. As shown in Fig. 1, the saw 28 projects downwardly belowthe motor 27 and forwardly of the frame of the traveling carriage so asto be in a, position to readily operate upon the work supported upon thetable 4. All except the lower portion of the saw 28 is enclosed within ahood 30 which is secured to and carried by the traveling carriage, thehood, as shown, being formed continuously with a. tank 31 which isarranged below and to the rear of the saw 28. As shown, the side wallsof the tank are continuous with and extend downwardly from the rearportions of the side walls of the hood, the rear wall of the hood beinginclined downwardly and rearwardly and merging with the rear wall of thetank. This tank serves to catch the sparks and cooling water thrown'rearwardly by the saw. By forming the hood and tank as one unitarystructure a strong, simple and efficient structure is obtained and boththe hood and the tank remain in proper fixed relation to the sawregardless of its position relatively to the bed 1. The tank 31 extendsnearly to the bottom of the bed 1, being arranged on one side thereof,as shown in Figs. '1. and 2; and the table 4 has secured thereto aninclined chute or spout 32 which telescopes within the tank 31 andserves to convey into said tank cooling water which collects in therecess or gutter 33 in the work table. The front of the tank 31 is opensufficiently to permit vertical adjustment of the table 4 and spout 32and also to permit forward and backward reciprocation of the tank withthe traveling carriage. The hood is provided on the outer side thereofwith a door 34 hinged as shown in 35 to permit access to the interior ofthe hood. The cooling fluid which is desirably water, although it may beair or any other suitable cooling medium, is sprayed on the face of thesaw through a perforated pipe 36 carried by the hood. The flow of thecooling fluid through the pipe 36 is controlled through a valve 37 in amanner which will be more fully explained'hereinafter.

The traveling carriage is desirably fed by power in accordance with theinvention described in my patent No. 1.070638 hereinbefore referred toso as to maintain the resistance of the work to the sawsubstantiallyconstant. The feeding means, as shown, comprise an electric motor 40supported upon the side of the bed 1 and connected through a suitablecoupling 41 and worm 42 to drive speed reducing gearing 43, 44 and 45co-acting with rack 46, which is secured upon the bottom of thetraveling carriage. In order to permit proper adjustment of the speedreducing gearing with respect to the rack 46 I desirably mount the gear45 for adjustment about the axis of the gear 44. To this end the gear45, as shown, is carried by a forked arm 47 which is pivoted on theshaft carrying the gear 44, the arm 47 being rigid with downwardextending arm 48 to the lower end of which is pivoted a rod 50 whichpasses through a bracket 51 at the rear of the bed 1. By

adjustment of the nuts 52 and 53 which are threaded upon the rod 50 onopposite sides of the bracket 51, the rod 50 may be moved back and forthso as to adjust the gear 45 towards or away from the rack 46 withoutdisturbing the connection between the gear 45 and the gear 44. Meanssuch as the nut 54 may be mounted to prevent loosening of the nut 52, itbeing understood that when the gear 45 has been properly adjusted withrespect to the rack 46 the nuts 52 and 53 are moved into engagement withopposite faces of the bracket 51.

It is desirable that the cooling fluid be sprayed upon the saw 28 whilethe latter is in operation, but that, toavoid waste, the supply of saidfluid be shut off when the traveling carriage and saw are in retractedor inoperative position. To this end I desirably form the valve 37 withan operating spring 37 so that normally it will tend to move downwardlyto open the passage between the supply pipe 56 and the pipe 36 and Ialso provide means whereby said valve is closed when the carriagereaches a predetermined pointin its rearward movement. As shown, I havesecured to the bed 1 a cam or incline 57 which is adapted to be engagedby the anti-friction roller 58 upon the lower end of the valve to forcethe latter upwardly into a closed position as the earriage approachesits rearmost position, the arrangement being such that the said valve isclosed only when the carriage is substantially in its rearmost positionand the saw and work are separated or in inoperative relation to eachother. In this way a supply of cooling fluid to the saw is insuredthroughout the operation of the latter while waste of the fluid isprevented. The cooling fluid sprayed upon the saw is, as hereinbeforestated, thrown rearwardly from the meansto thesewer or to any t in abearing 61 which is supported for up and down and lateral adjustmentupon a vertical rod 62 fixedly secured to the'work table. The bearingbracket 61 may be secured in suitable position upon the rod 62 by meanssuch as the clamp 63. It is desirable to provide a suitable means tofacilitate positioning of the work V with respect to the saw, which, asshown in dot and dash lines in Fig. 4c, is arranged to extend downwardlyin the slottedv opening '38 in the work table. To this end, as clearlyshown in Figs. t and 5, the pivoted sector shaped abutment upon the worktable carries a fixed laterally projecting horizontal rod 64 upon whichis slidably mounted a bracket 65 which carries a' bearing in which anabutment'such as a rod 66 is mounted for longitudinal movement parallelto rod 64: andtransverse to the plane of the saw. The inner end of rod66 is adapted to be engaged by the end of the work,

thereby insuring the cutting off of asection of desired length and alsofacilitating the holding of the work in position. Means such as theclamps 67 and 68 serve respectively to secure the bracket 65 in adjustedposition upontlie rod 64czand the rod 66 inadjusted position within thebracket 65. It is fre quently desirable to make a cut at an angle to thelength of an article; and tofacilitate positioning the work so as tomaintain the same at the proper angle to the saw I have shown 'a pivotedsector shaped abutment 70 having a straight vertical face 71 againstwhich the front edge of the work is adapted to bear said face beingparallel to the rodl66. The member 7 0 is pivoted for movement. as shownat 7 2, andmay be held in adjusted position at anyone of-several anglesto the saw by passing a dowel pin 78 through an opening providedtherefor in the member/7Q and into one of the spaced openings 74; in thework table. The sector 70 is, as shown in Fig. 5,

provided with a cut-away portion 75 into which the saw may project whenthe sector 70 is in its various positions of adjustment.

"The operation of the machine will be clear to any one skilled in theart from the foregoing detailed description thereof. Although I havedescribed my improvement in considerable detail and in respect to oneparticular embodiment of my invention, nevertheless, I do not desire tobe limited to the details shown and described except where clearly setout in the appended claims, since many changes and modifications may bemade without departing from the spirit of my invention and scope of theappended claims.

' Having fully and clearly described my invention what I claim as newand desire to secure by Letters Patent is:

1. In a machine of the class described, the combination with a rotatableoperation per forming member, work supporting means and means forfeeding said operation performing member relatively to said worksupporting means, of a tank arranged below and to the rear of theoperation performing m =mber and in fixed relation to the axis thereof,to catch particles thrown from the operation performing member.

2. In a machine of the class described, the combination with a rotatableoperation per forming member, work supporting means and means forfeeding said operation performing member relatively to said worksupporting means, of means for supplying a cooling medium to saidoperation performing member, and a tank arranged below and to the rearof the operation performing member and in fixed relation to the axisthereof, to catch particles thrown from the operation performing member.

3. The combination with a rotatable operation performing member, worksupporting meansand means for producing a relative feeding movementbetween said member and means, of means for supplying a cooling mediumto said operation performing member, a tank arranged in fixed relationto the axis of saidoperation performing member to catch particles thrownfrom said member, and a drain leading from said work support ing meansand arranged to communicate with said tank throughout. said relativefeeding movement.

4t. The combination with a rotatable operation performing member, worksupporting meansand means for producing a relative feeding movementbetween said member and means, of means for supplying a'cooling mediumto said operation performing member, a tank arranged in fixed relationto the axis of said operation performing member to catch particlesthrown from said member, and a drain spout leading from said worksupporting means and telescoping with said tank so as to communicatewith the latter throughout said relative movement.

5. The combination witha rotatable oper ation performing member, worksupporting means and means for producing a relative feeding movementbetween said member and means, of a hood arranged in fixed relation tosaid operation performing member and a tank communicating with and infixed rela tion to said hood for catching particles thrown from saidoperation performing member. p

6. In a machine of the class described, the combination with a rotatableoperation performing member, normally stationary work supporting meansand means for feeding said operation performing member relatively tosaid work supporting means, of a movable tank in fixed relation to theaxis of said operation performing member to catch particles thrown fromthe said member, and a drain leading to said work supporting means andhaving a fixed relation thereto but communicating with said tankthroughout the aforesaid relative movement.

7. The combination with a rotatable oper ation performing member, worksupporting means adjustable vertically relatively to said operationperforming member, and means for feeding said operation performingmember horizontally relatively to said work sup porting means, of a tankarranged in fixed relation to the axis of said operation performingmember to catch particlesthrown from said member, means for supplying acooling medium to said member, and a drain leading from said worksupporting means and arranged to communicate with said tank throughoutsaid feeding, movement and vertical adjustment of said work supportingmeans.

8. In a machine of the class described, the combination with a rotatableoperation performing member, work supporting means, and means forfeeding said operation performing member relatively to said worksupporting means. of a tank in fixed relation to the axis of saidoperation performing member to catch particles thrown from the saidmember, means for supplying cooling medium to the said member, a valvecontrolling the supply of cooling medium and means for automaticallyclosing said valve when the operation performing member and worksupporting means are in separated or inoperative position to each other.

9. In a machine of the class described, the combination with a rotatableoperation performing member, work supporting means, and means forfeeding said operation performing member relatively to said worksupporting means, of a tank in fixed relation to the axis of saidoperation performing member to catch particles thrown from the saidmember, means for supplying cooling medium to the said member, a valvecontrolling the supply of cooling medium and a cam for automaticallyclosing said valve when the operation performing member and worksupporting means are in separated or inoperative position to each other.

10. The combination with a rotatable operation performing member, worksupport ing means, and means for'producing a relative feeding movementbetween said member and means, of means for spraying a cooling mediumupon said operation performing member, a valve for controlling thepassage of the cooling medium through said means, and automatic meansfor closing said valve when said operation performing member and saidwork-supporting means are in separated or inoperativerelation to eachother.

11. In a machine of the class described, the combination with astationary bed and a traveling carriage one of which is provided withwork supporting means and the other with an operation performing member,of means for producing a relative feeding movement between said bed andcarriage, said meanscomprising a motor, a rack carried by said carriage,speed reducing gearing between said motor and rack, and means foradjusting said gearing into operative relation with respect to said rackwithout disconnecting the same from said motor.

12. In a machine of the class described, the combination with astationary bed and a traveling carriage, one of which is provided withwork supporting means and the other with an operation performing member,of means for producing a relative feeding movement between said bed andcarriage, said means comprising a motor, a rack carried by saidcarriage, speed reducing gearing between said motor and rack including apair of intermeshing gears, and means for adjusting one of said gearsabout the axis of the othergear towards operative position with respectto said rack.

13. In a machine of the class described, the combination with a worktable, of means for holding the work in position upon said table, saidmeans including a pivoted abutment against which one side of the work isadapted to bear and a second abutment carried by said first abutment forengaging an. end of the work. i i i 14:. In a machine of the classdescribed, the combination with a work table, of means for holding thework in position upon said table, said means including a pivotedabutment against which one side of the work is adapted to bear and asecond abutment carried by said first abutment for engaging an end ofthe work, and said second abutment being mounted for adjustmentlongitudinally of the work engaging surface of said first namedabutment.

In testimony whereof, I have signed my name to this specification.

LOUIS H. THULLEN.

